We’ve never been here, but it looks AMAZING and we wish we had made time for it on our last trip. On the map it looks like it’s only a 2.5 hour drive, and it looks completely worth it. Put it on your itinerary if you’re making a road trip and have a bit of extra time. Who knew sulfuric acid fused to limestone could look so gorgeous and otherworldly?

http://www.nps.gov/cave/index.htm